Disk crusher



Aug. 17, 1926. 1,596,217

E. B. SYMONS DI SK CRUSHER Filed Nov. 15. 1925 Invfzor Ed I 535 772072; E 4 3 J ttorney 5 Patented Aug. 17, 1926.

UNIT-ED STATES PATENT OFFICE.

EDGAR BQSYMONS, OF HOLLYWOOD, CALIFORNIA, ASSIGNORTO SYMONS BROTHERS COMPANY, OF MILWAUKEE, WISOONSIN, A CORPORATION OF SOUTH DAKOTA.

DISK CRUSHER.

Application filed November 18, 1925. Serial No. 68,745.

My invention relates to an improvement in disk crushing machines andparticularly to an improvement in the guard plates or segments which lie in the plane of discharge of the material crushed, and receive the material centrifugally expelled from between the disks. One object of my invention is to'provide such wear plates or segments which shall be simply and easily constructed, as-

. circumferential flange B sembled and replaced. Another object is to provide such guard plates or members in which the parts receiving the maximum wear' are reinforced. Another object is to so shape them as to minimize wear upon them. Other objects will appear from time to time in the course of the specification and claims. I illustrate my invention more" or less diagrammatically in theaccompanying drawings wherein; a

Figure 1 is avertical axial-section; and Figure 2 is. a section on the line 2-2 of Figure 1.

Like parts are il'lustratedby like symbols throughout the specification and drawings.

A is any suitable crushingmember, positioned on a base A and adapted to support a bearing fragmentarily shown as A 'in Figure 1. Rotating in such a bearing is thehollow shaft B terminatingin an outwardly flared cup portion B with an interior spherical surface B terminating in an outwardly projecting circumferential flange C is a solid shaft adapted to rotate within the hollow of the shaft 3. C is a spherical head at theend thereof, adapted conform to. the opposed spherical surface Bf hichis engaged by means ofa babbitt'bearing member 0 D is a centrally apertured carrying plate havin a circumferential rearw'ardl positioned flange D adapted to be secure to the of the hollow shaft B for example by means of the bolts D?, nuts D and spacers D.

E and E are opposed -concave disks mounted one on the member (1*. and the other on themember D-andadapted to define a lenticular crushin means of attaching these isks form no part oft-he present invention and are not escribed indetaiL. The disk 15 is cen-,

' that nevertheless many space. The

'wear isreceived spout adapted to feed material through the. aperture E to the lenticular crushing space defined by the disks.

Any suitable means not. herein shown are provided to rotate the shaftsin unison and the material crushed therebetween is cen-t-rifugally discharged therefrom.

H, H are guard or material receiving segments aligned in the plane of the disks. They may I be secured in position in any suitable manner but I illustrate the perforated lugs H whereby they may be bolted by bolts H to the surrounding hous ingand frame structure H Each guard section consists of a thickened relatively massive central portion H and curved-or cut away edge or side portions H H, H being shortened, to permit the inter-posie tion of the angle iron guard H".

It will be-r'ealized that whereas I have illusti'atedwa practical and operative device changes might be madein the size, shape, number and disposition of parts without departing from the spirit of my descri tion and drawings to-be taken as in a broa sense illustrative rather than as limiting me to my specific showing.

The use and operation of my invention are as follows:

- The shafts B and Care rotated in unison at a relatively rapid rate. .Thematerial to be crushed is fed downwardly slightly inclined, the clearancebetween thedisks bein therefore greater at the bottomthan at t s top of the crushing. zone as shown in Figure 1. As the pieces of material being crushed drop into the lower portion of the zone and are gripped between the disks they are rotated by the disks the disks moving in unison, until they'readh the u per ortion of the crushing zone'where t e app ach of the disks is closer. The. result is a' rushing operation. As the individual particles are successively crushed to such a size that they can escape from about the peripheries of the disks they are centrifugallyejected. Some of the. particles mpinge u onthe spacer or" sleeves D which protect t e securing bolts D but mostof the the thickened portion H of the segments The interior conformation of the segments is-such that in the my invention. I wish, therefore,

along the chute G into the space defined by theopposed disks. The axes of the disks} are place no sharp angles or corners are left and the probability of the material packing in the trough formed by the segments is practically eliminated. This feature is particularly important when moist or somewhat sticky or adhesive material is being crushed.

The prevention of packing is particularly important, since when packing begins it easily fills the entire trough and since, when the trough is filled the wear on the shields D becomes extreme.

The inward recurvature of the wall members H H prevents rebounding of the particles against the guards or spacers D or against the edges of the rotating disks.- This is particularly important in connection with preventing the material from passing under the edges of the segments, for example between the outer edge of the side H or between the outer edge of'the side H and the flange H. material, so far as it rebounds, rebounds toward the center of the segment.

In order to permit the discharge of the material, an open space indicated as H in Figure 2 is left at the bottom of the crushing zone, the material reduced passing downwardly along the various segments and escaping at that point. i

I claim:

1. In a disk crusher comprising a pair of opposed disks and means for rotating them in unison at such a rate as to expel the reduced material centrifugall from the crush ing zone, a receiving mem r positioned in the plane of discharge of such material, said member comprising a central portion aligned with the peripheries of said disks, and recurved side walls projecting inwardly therefrom.

2. In a disk crusher comprising a pair of opposed disks and means for rotating them in unison at such a rate as to expel the reduced material centrifugally from the crushing zone, a receiving member positioned in the plane of discharge of sub 7 material, said member comprising'a central portion aligned with the peripheries of said disks, and recurved side walls projecting inwardly therefrom, the central portion being substantially thicker than the side walls.

3 3, In a disk crusher comprising a pair of opposed disks and means for rotating them in unison at sucha rate as to expel the re- The curvature is such that the dubed material centrifugally from the crushing zone, a receiving member positioned in the plane of discharge of suchmaterial, said member comprising a central" portion aligned with the peripheries of said disks, and recurved side walls projecting inwardly therefrom, one of said walls terminating about an are more distant from the center of rotation of the disks than the other.

4. In a disk crusher comprising a pair of opposed disks and means for rotating them in unison at such a rate as to expel the reduced material centrifugally from the crushing zone, a receiving member positioned in the plane of discharge of such material, comprising a plurality of segments, each segment comprising a central portion aligned ing them in unison at such a rate as to expel the reduced material centrifugally from the crushing zone, a receiving member adapted to be positioned in the plane of discharge of such material, comprising a plurality of segments, each segment comprising a relatively thick central portion aligned with the peripheries of said disks, and rela tively thin walls, ont of alignment with such peripheries, projecting inwardly from the thick central portion.

6. For use with a disk crusher comprising a pair of opposed disks and means for rotating them in unison at such a rate as to expel the reduced material centrifugally from the crushing zone, a receiving member adapted to be positioned in the plane of discharge of such material, comprising a plurality of segments, each segment comprising a relatively thick central portion aligned 'with the peripheries of said disks, and rela- Signed at ,Hollywood county of Los' Angeles and State of California, this 7th Q day of November 1925.'

EDGAR B. SYMQNS. 

